Dr. Stuart Levy, director of the Center for Adaptation Genetics and Drug Resistance, and professor of molecular biology, microbiology, and medicine at Tufts University School of Medicine, agrees that antibiotics are overused and even abused in both human and veterinary medicine. He says that antibacterial agents and antibiotics share the same resistance problem, something the makers of antibacterial sprays don’t want you to know. After all, if you have a product that “kills more than 99.9% of illness causing bacteria and viruses on environmental surfaces in your home,” that means 0.1% of them are both stronger than the other bugs, and they’re the ones left behind to replicate at a shocking rate of speed. That is precisely how super-viruses are made—they have no competition from much less harmful viruses or bacteria, so they’re the ones that rule the roost. Dr. Levy also warns the antibacterial craze has another potential consequence: Studies reveal an increased frequency of allergies and cases of asthma and eczema in persons who have been raised in an environment overly protected against microorganisms.